Refrigeration coil



C. M. BRENNER REFRIGERATION COIL April 1, 1930.

2 Sheets-Sheet 1 Filed April 12, 1929 ATTOR N EY April 1, 1930. c. M. BRENNER REFRIGERATION COIL 2 Sheets-Sheet 2 Filed April 12, 1929 jag/.4.

INVENTOR d/gfirennen WITNESSES; 5 SW61 ATTOR N EY Patented Apr. El, 1930 Parana gTATES Gil-LES MANDELL BRENNER, F SHREVEPORT, LKQUISIANA REFRIGERATION (@11- Application area i am,

water down between the tubes which is frozen on the lower part of the coil because it cannot pass between the tubes owing to them being so close together. This water congeals in the form of icicles which will not melt but forms the nucleus for the formation of more ice.

It is to prevent this icing of the coils and the shutting down of the refrigerating plant for a long period necessary to defrost the coils, that this invention is designed.

Another object of the invention is to provide means for preventing this frosting of the coils and which is simple and chea to manufacture and when installed permlts the water if any seeps through; to fall down between the tubes and prevent the forming of an ice nucleus.

In carrying out these objects, the inven-- tion is susceptible of a wide range of modiso fication without departing from the spirit or sacrificing any of the advantages of the claimed invention; there being shown in the drawings for illustrative purposes a preferred and practical form, in which Figure 1 represents a front elevation of a refrigerator with this improved coil shown installed therein, the door of the refrigerator being removed; I

Fig. 2 is a longitudinal section of a refrigcrating unit constructed in accordance with this invention;

Fig. 8 is a transverse vertical section thereof taken on the line 33 of Fig. 2; Fig. i is a front or end elevation of a slightly different form of refrigerating unit embodying this invention;

Fig; 5 is a side elevation thereof; Fig. 6 is a transverse vertical section taken no on the line h b of Fig. 5; and

1929. Serial Nor 354,683.

Fig. 7 is a horizontal section taken on the line 7-7 of Fig. 5.

In the embodiment illustrated in Figs. 1 to 3 a boiler 1 is shown such as is ordinarily used in commercial coils of this character for sulphur dioxide or methyl chloride and depending therefrom are four tubes 2 which communicate with the interior of the boiler and the bottomsof these tubes are very much colder than the top of thecoil, the temperature thereof being considerably below freezing when the top is several degrees above These tubes 2 in the embodiment freezing. illustrated are shown spaced longitudinally from each other a much greater distance than is usual in coils of this character. In standard coils two ipes only come out of the boiler bottom while in this coil "four pi es are used which provides for spacing the tu es farther apart and also gives about one third morelineal feet of tubing than with a standard coil occupying the same s ace, hence the efliciency and the capacity are oth increased.

Arranged between the coils are copper fins 3 such as are ordinarily used and the space between the fins and the tubes is also suficient to permitany drip water which may get past the shield 10 to flow freely without having a chance to congeal.

To prevent the drip water from the boiler 1 from dripping down between the tubes and the fins a horizontally disposed shield 10 is disposed adjacent the lower portions of the boiler 1 between it and the fins 3 as is shown clearly in Figs. 2 and 3 and through which the tubes extend, a portion only of said tubes be- 1 ing exposed above the shield. These tubes are so closely engaged with the shield that no water can ass between them.

The shie d 10 which may be made of any suitable material is constructed in the form of a roof which slants downwardly from its center towards its opposite sides and has down curved edges 11 projecting beyond the ends'of the fins and which direct the drip water from the boiler away from the fins.

It will thus be seen that when the frost on top of the boiler melts incident to the warming up of the boiler when the refrigeratmg unit is shut down, it will flow down over the shield 10 and be deposited away from the coils of the unit. Should any water seep through between the tubes and the shield the distance between the coil sections is suflicient to permit such water to drop down without being retarded and congealing and forming an ice nucleus.

In the form shown in Figs. 4 to 7 the tubes 2 are arranged longitudinally of the boiler instead of transversely as in Figs- 1 to 3 and which may be made in any number of sections as required. The fins 3 of this form of the invention are arranged transversely between the tubes as is shown clearly in Figs. 5 to 6. Frosting or icing up of the tubes 2 is also prevented in this form of the invention by means of a shield 10 which is similar to the one shown in the other figures and located in the same position relative thereto and the boiler.

Itwill thus be seen that by spacing the tubes further apart than in the ordinary coil and by mounting between the tops of them and the boiler the shield either 10 or 10 these tubes will be protected and the shutting down of the refrigerating plant for defrosting the coils will be avoided.

A plurality of closely arranged fins 12 are preferably used on top of the boiler to assist in defrosting or to prevent frosting on top of the boiler and which also increase the refrigerating capacity of the coil.

Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will, of course, be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention or its scope as claimed.

I claim;

1. The combination with a refrigerating unit including a boiler with refrigerant containing tubes depending therefrom, of a drip protector for said tubes mounted between said boiler and the upper portions of said tubes, and spanning the space between the tubes and projecting over and beyond them.

2. In combination with a refrigerating unit including a boiler with depending refrigerant tubes; of a horizontally disposed roof-like shield arranged over the upper portions of said tubes between them and the boiler and having fluid tight connection therewith whereby the drip from the boiler will flow down over said shield without contacting the tubes.

3. The combination with a refrigerating unit including a boiler with two refrigerant containing tubes depending therefrom, of a drip protector for said tubes mounted between said boiler and the upper portions of said tubes, and spanning the space between the tubes and projecting over and beyond them.

4. The combination with a refrigerating unit including a boiler having fins on top of the boiler and refrigerant containing tubes connected therewith and depending therefrom, fins arranged between said tubes, and a horizontally disposed shield arranged above and extending over said fins and connected with the upper portion of the tubes.

5. The combination with a refrigerating unit including a boiler having fins surrounding the boiler, refrigerant containingtubes connected therewith and depending therefrom, fins arranged between said tubes, and a horizontally disposed shield arranged above and extending over said fins and con: nected with the upper portion of the tubes.

6. The combination with a refrigerating unit including a boiler having refrigerant containin tubes connected therewith and depending t erefrom, a horizontally disposed shield arranged above and extending over 

